參數(shù)資料
型號(hào): DSP56F803BU80
廠商: Freescale Semiconductor
文件頁數(shù): 4/52頁
文件大?。?/td> 0K
描述: IC DSP 80MHZ 64KB FLASH 100LQFP
標(biāo)準(zhǔn)包裝: 90
系列: 56F8xx
核心處理器: 56800
芯體尺寸: 16-位
速度: 80MHz
連通性: CAN,EBI/EMI,SCI,SPI
外圍設(shè)備: POR,PWM,WDT
輸入/輸出數(shù): 16
程序存儲(chǔ)器容量: 71KB(35.5K x 16)
程序存儲(chǔ)器類型: 閃存
RAM 容量: 2.5K x 16
電壓 - 電源 (Vcc/Vdd): 3 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x12b
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 100-LQFP
包裝: 托盤
56F803 Technical Data, Rev. 16
12
Freescale Semiconductor
2.5 Interrupt and Program Control Signals
Table 2-7 Data Bus Signals
No. of
Pins
Signal
Name
Signal
Type
State During
Reset
Signal Description
16
D0–D15
Input/O
utput
Tri-stated
Data Bus— D0–D15 specify the data for external Program or Data
memory accesses. D0–D15 are tri-stated when the external bus is
inactive. Internal pull-ups may be active.
Table 2-8 Bus Control Signals
No. of
Pins
Signal
Name
Signal
Type
State During
Reset
Signal Description
1
PS
Output
Tri-stated
Program Memory Select—PS is asserted low for external Program memory
access.
1
DS
Output
Tri-stated
Data Memory Select—DS is asserted low for external Data memory access.
1
WR
Output
Tri-stated
Write Enable—WR is asserted during external memory write cycles. When
WR is asserted low, pins D0–D15 become outputs and the device puts data
on the bus. When WR is deasserted high, the external data is latched inside
the external device. When WR is asserted, it qualifies the A0–A15, PS, and
DS pins. WR can be connected directly to the WE pin of a Static RAM.
1
RD
Output
Tri-stated
Read Enable—RD is asserted during external memory read cycles. When
RD is asserted low, pins D0–D15 become inputs and an external device is
enabled onto the device data bus. When RD is deasserted high, the external
data is latched inside the controller. When RD is asserted, it qualifies the
A0–A15, PS, and DS pins. RD can be connected directly to the OE pin of a
Static RAM or ROM.
Table 2-9 Interrupt and Program Control Signals
No. of
Pins
Signal
Name
Signal
Type
State During
Reset
Signal Description
1
IRQA
Input
(Schmitt)
Input
External Interrupt Request A—The IRQA input is a synchronized
external interrupt request indicating an external device is requesting
service. It can be programmed to be level-sensitive or
negative-edge- triggered.
1
IRQB
Input
(Schmitt)
Input
External Interrupt Request B—The IRQB input is an external
interrupt request indicating an external device is requesting service.
It can be programmed to be level-sensitive or
negative-edge-triggered.
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